#!/usr/bin/perl -w
use strict;
use Data::Dumper;

my @array1 = 
(
  {
    hour => "1",
    minute => "30",
    flag => "cmd1"
  },

  {
    hour => "1",
    minute => "30",
    flag => "cmd2"
  },

  {
    hour => "1",
    minute => "30",
    flag => "cmd3"
  }
);

my @array2 = (
  {
    hour => "1",
    minute => "30",
    flag => "cmd1"
  },

  {
    hour => "1",
    minute => "30",
    flag => "cmd2"
  },

  {
    hour => "1",
    minute => "30",
    flag => "cmd3"
  },

  {
    iamdifferent =>'because',
    hour => "1",
    minute => "30",
    flag => "cmd4"
  },
  
  {
    iamdifferent =>'because',
    hour => "1",
    minute => "40",
    flag => "cmd6"
  },
  
  {
    iamdifferent =>'because',
    hour => "1",
    minute => "40",
    flag => "cmd6",
    minute => "40"
	 
  },
  
  {
    a =>'because',
    b => "1",
    c => "40",
    d => "cmd6",
    minute => "40"
	 
  }



);


# this will hold my hash "digests" as keys to lists of
# what array and position it happened in.
my %structures=();

# the arrays with anon hashes we will analize
my @arrays=(\@array1, \@array2);




my $which_array=0;

for (@arrays){		
	my $a=$_;

	my $anon_hash_position_in_array=0;

	for (@{$a}){
	
		my $structure;
	
		for my $k(sort (keys %{$_})){
			$structure.=":$k:";
		}
		my $val= "array$which_array"."_position$anon_hash_position_in_array";
	
		push @{$structures{$structure}}, $val;
		$anon_hash_position_in_array++;	
	}

	$which_array++;

}


print Dumper(\%structures);
exit;

##</code><code>##

$VAR1 = {
          ':flag::hour::minute:' => [
                                      'array0_position0',
                                      'array0_position1',
                                      'array0_position2',
                                      'array1_position0',
                                      'array1_position1',
                                      'array1_position2'
                                    ],
          ':flag::hour::iamdifferent::minute:' => [
                                                    'array1_position3',
                                                    'array1_position4',
                                                    'array1_position5'
                                                  ],
          ':a::b::c::d::minute:' => [
                                      'array1_position6'
                                    ]
        };